Tony Posted April 13, 2014 Report Share Posted April 13, 2014 Not sure how practical this is, but interesting concept nonetheless. Quote Link to comment Share on other sites More sharing options...
adam_r Posted April 13, 2014 Report Share Posted April 13, 2014 holy rotational mass batman!!! i bet that thing does not rev up beyond a few K rpm! Quote Link to comment Share on other sites More sharing options...
Tony Posted April 14, 2014 Author Report Share Posted April 14, 2014 So you like then Quote Link to comment Share on other sites More sharing options...
andyelcomb Posted April 14, 2014 Report Share Posted April 14, 2014 I don't like it - vastly over-complicated and I noticed straight away that they said zip about the head gasket seal. You need to have a sliding gasket to seal the combustion chambers - so if Mazda couldn't make a simple rotor seal last, how the heck are they going to make a durable head gasket work? Quote Link to comment Share on other sites More sharing options...
Sagitar Posted April 14, 2014 Report Share Posted April 14, 2014 Before you get too excited, have a look at some of the earlier attempts to exploit the same (or similar) concepts. The format was of particular interest for torpedo engines because the tubular shape. http://www.douglas-self.com/MUSEUM/POWER/unusualICeng/axial-ICeng/axial-IC.htm#dy The "swashplate" design seems to me to have some basic practical faults for use in an IC engine (the efficient transmission of torque to the drive shaft for one). But if it is turned the other way round, drive the swashplate and use the pistons to pump a hydraulic fluid, it makes a very efficient high speed, high pressure pump and I have seen it used widely in aircraft applications. Quote Link to comment Share on other sites More sharing options...
Tony Posted April 15, 2014 Author Report Share Posted April 15, 2014 It's almost like back engineering with additional modern materials...... What's your take on the floating head gasket? Quote Link to comment Share on other sites More sharing options...
Sagitar Posted April 15, 2014 Report Share Posted April 15, 2014 Sorry Tony, but I've never really had a serious look at the matter, though it is obviously a huge practical problem given the extreme (not to say dynamic) environment in which sealing has to be maintained. In the days when I designed pumps, the equivalent components could be made from a range of materials to cope, for example, with differential expansion and lubrication. We could port pressure from the high-pressure side of the pump onto the outside of the sealing plate/gasket so that the clearances diminished as the pressure rose; and we could run the device up to speed, getting oil filled clearance from the Michell effect, before closing a by-pass valve and bringing the outlet side up to pressure. There may well be similar technical dodges that could be used in a swashplate I.C. engine but I am not aware of them. I would expect a firm like Ricardo to be up to speed on these issues or the I.Mech.E library might have something. Quote Link to comment Share on other sites More sharing options...
Tango Posted April 15, 2014 Report Share Posted April 15, 2014 I see the Duke engine is mentioned at the end of the article, stating it was first run in 2011. Quote Link to comment Share on other sites More sharing options...
SMARTLY Posted April 15, 2014 Report Share Posted April 15, 2014 http://www.youtube.com/watch?v=cTpPBiReaZk Quote Link to comment Share on other sites More sharing options...
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